Microwaves & RF - Masters of High-Frequency Design
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05/24/2017 12:05 PM
For Prototyping, New Software-Defined Radio for Millimeter Waves
National Instruments released new radio heads that can be swapped into its millimeter wave transceiver system to measure how these high frequencies are affected by trees, buildings, cars, and people.
National Instruments’ radio heads operate over the
05/24/2017 06:24 AM
Measurements Help Minimize EMI and RFI
Electronic energy is widespread in most operating environments, and circuits must be designed so that they don’t add to the totals—or succumb to the interference.
05/23/2017 08:54 AM
AWGs Generate Multiple Complex Signals to 4 GHz
These AWGs pack enough digital processing power to generate as many as eight independent RF/microwave signal channels per instrument for emulating complex signal environments.
05/22/2017 09:30 AM
Sunlight Powers NRL’s Autonomous UAVs
Research at NRL seeks to extend the flight time of an electric-powered UAV through a combination of on-board photovoltaic cells and flight management software.
05/22/2017 06:59 AM
Low-Power OCXOs Take Flight in LEOS Systems
These oven-controlled crystal oscillators provide stable output signals with low phase noise and power consumption and high radiation tolerance for satellite applications.
05/19/2017 06:38 AM
Trump and H-1B Visas: What’s to Come?
The visa program again comes under scrutiny, but it’s not clear whether the recent executive order will have any impact in the foreseeable future.
05/18/2017 01:14 PM
Producing Efficient Power for 5G
Supply modulation techniques such as envelope tracking provide ways to increase the efficiency of power amplifiers such as those used in 5G wireless networks.
05/18/2017 08:56 AM
Frequency Stability, Here We Come!
For applications requiring even higher levels of temperature stability than what crystal oscillators can provide, OCXOs may be the solution.
05/17/2017 10:50 AM
IMS 2017 Hits Honolulu
This year, the RF/microwave industry’s flagship event comes to Honolulu with some new tricks up its sleeves.
05/17/2017 10:49 AM
2017 IEEE IMS Exhibitors Prepare for “The Wave”
Visitors to the RF/microwave industry’s largest conference and exhibition can sample some of the hardware, software, and test-equipment products that are turning 5G and IoT into reality.
05/17/2017 08:09 AM
Holograms Stand Out In Sea of Wireless Signals
An experimental system can take ghostly snapshots by measuring the reflections of the same Wi-Fi signals used for connecting to the internet. It has been suggested as a way of tracking packages in warehouses or mapping collapsed buildings to safely a
05/16/2017 07:38 AM
AWG vs. DDS: Sources of Contention
These two types of signal sources both rely on digital architectures to generate pulsed output signals and analog sinewaves, often including complex modulation.
05/15/2017 06:14 AM
The Battle Over V2V Wireless Technologies
The DSRC standard was expected to have been named the official wireless technology for V2V communications, but now that decision's up in the air.
05/10/2017 12:33 PM
Handle GaAs and GaN MMICs with Care
This white paper explains the various factors associated with successfully building microwave assemblies that contain gallium-arsenide (GaAs) or gallium-nitride (GaN) devices.
05/10/2017 07:02 AM
Wearable Batteries Take to the Field
These two flavors of chargeable and non-rechargeable battery packs are light in weight and conform to a soldier’s body for ease of transport with plenty of power to spare.
05/10/2017 05:59 AM
Cognitive EW Provides Computer-Powered Protection
Combining signal detection with sophisticated signal-analysis algorithms provides the means to quickly determine whether an unknown signal is friend or foe—and how to react to it.
05/09/2017 12:54 PM
Q&A: Wayne Shiroma, IMS 2017 General Chair
The 2017 installment of the International Microwave Symposium (IMS) is coming to Honolulu June 4-9. General Chair Wayne Shiroma tells us what's in store.
05/09/2017 07:04 AM
Coaxial Attenuators Control Levels to 50 GHz
These coaxial attenuators cover a broad frequency range of dc to 50 GHz and provide tightly controlled, fixed attenuation values of 3, 6, 10, or 20 dB with low VSWR.
05/08/2017 07:07 AM
DRFMs Serve as Waveform Recorders
These highly integrated subsystems combine the best of analog and digital signal processing to accurately record signal waveforms in the field, such as from radars.
05/05/2017 07:27 AM
Partnership Propels 5G Development
NYU WIRELESS and National Instruments (NI) are teaming up to develop the advanced solutions needed to bring 5G to fruition.
05/02/2017 07:38 AM
Surveying SDLVAs for ELINT and EW
SDLVAs provide the means to amplify and analyze short pulses over wide bandwidths at the front ends of RWRs, as well as ELINT and ECM receivers.
05/02/2017 06:02 AM
Facility Takes on the Most Challenging Circuits
Drawing on the expertise and experience of its operators, this company provides printed-circuit-board fabrication and assembly services for single-layer and multilayer PCBs.
05/01/2017 10:12 AM
Photodetectors Shed Light on Optical Sensing
These high-responsivity photodetectors cover wide wavelength ranges for a variety of commercial, industrial, and military applications, including for munitions guidance.
04/26/2017 10:54 AM
Software Tools Target First Draft of New Wi-Fi Stardard
“As the standardization and evolution of 802.11ax continues, engineers require a software-centric test approach that can keep pace with the latest standard features and challenging new test cases,” said Charles Schroeder, National Instruments’ vice president of RF marketing, in a press statement.
04/25/2017 12:16 PM
Maintaining Tactical Voice Communications
Issues with confused voice communications have been traced to listening headsets and clutter caused by excess information to be processed in a short time.
04/25/2017 06:32 AM
An Arbitrary Waveform Generator for Radar and Electronic Warfare
"Signal generation has been a major problem for RF designers and researchers for some time now, and it is only getting worse as their needs have grown more complex,” said Jim McGillivary, general manager of RF and component solutions at Tektronix.
04/25/2017 06:10 AM
Readying Wearable Devices for 5G
Wearable antennas will play a large part in achieving improved wireless connectivity on 5G communications networks.
04/24/2017 08:00 AM
Carry Spectrum Analysis with You
Claims are that spectrum analyzers in portable form still sustain the high performance of their benchtop brethren. I got the chance to test-drive one to see if that’s really the case.
04/20/2017 06:25 AM
ARL Shares Software Via Open-Source Policy
The open-source policy introduced by ARL allows government and non-government researchers outside of ARL to analyze and verify new software code developed by ARL.
04/19/2017 08:20 AM
Federal Spectrum Auction Opens 70 Megahertz for Mobile Broadband
Federal officials announced last week that a recent auction of television spectrum had repurposed 70 megahertz for mobile and broadband applications. Wireless carriers spent $19.8 billion to license the 600 MHz spectrum, which has better range and pe
04/18/2017 12:04 AM
Test Ranges To Support Multiple Fighter Aircraft
The CRIIS is part of the modernization of U.S. Air Force, Navy, and Army test ranges to speed and standardize testing of the various electronic systems aboard fighter aircraft.
04/13/2017 04:50 AM
How AT&T Takes Millimeter Wave Channel Measurements
Last January, National Instruments released a transceiver system for modeling the behavior of millimeter waves, a far-out class of high frequency bands that wireless companies have pegged for 5G communications. It came with channel coding software an
04/10/2017 11:58 PM
AMD Strikes Deal for Nitero, Aiming for Wireless Virtual Reality
Lots of things are holding back the widespread usage of virtual reality, including side effects like motion sickness and high prices for equipment. But one prickly challenge is getting rid of the wires that connect high-end headsets to video game con
04/10/2017 09:12 PM
Underlining the Meaning of Linearity
While easy to conceptualize, it can be difficult to achieve the linearity of an RF/microwave component, which is essential for communications systems relying on advanced modulation schemes.
04/10/2017 12:17 PM
Test Equipment Gets Small
Download the PDF of this article.
Today, we are clearly seeing a push toward better-performing products in smaller sizes. To prove this, one need only look at how far cellular phones have advanced over the years. Now, smartphones can do almost whatev
04/10/2017 05:30 AM
5G Goes Over the Air
For next-generation 5G networks to finally become reality, over-the-air testing must be available—and many companies are working to make that happen.
04/07/2017 03:39 AM
Compare Phase-Locking Methods of RF Sources
Several different design approaches, such as leveraging a programmable PLL or even an integrated PLL/VCO, can be taken to meet performance requirements for RF/microwave sources.
04/07/2017 12:40 AM
CVD Diamond Manages Device Heat Effectively
Synthetic diamond materials provide the mechanical stability and outstanding thermal conductivity needed to dissipate heat from GaN and other high-power semiconductor devices.
04/06/2017 11:38 PM
Study the Loss of Microstrip on Silicon
By understanding their loss mechanisms, microstrip transmission lines on silicon substrates offer potential for low-cost passive microwave components.
04/06/2017 11:10 AM
Satellite Start-Up Thinks Power Amplifiers Are Better With Diamond
Akash Systems opened for business late last year, selling unusual semiconductors layered onto slabs of synthetic diamond. But the story behind the technology goes back fourteen years, when Felix Ejeckam, Akash’s co-founder and chief executive, starte
04/06/2017 02:00 AM
Test Equipment Makes Wi-Fi Measurements Over the Air
New test equipment lets engineers measure Wi-Fi performance without having to plug wires into the device under test. Using a special network mode, a new Anritsu instrument can make measurements that better reflect how the device will act in the real
04/05/2017 07:20 AM
Mercury Systems Buys Delta Microwave for $40.5 Million
Mercury Systems is buying a supplier of microwave components with applications in everything from satellite communications to missile guidance systems. Its $40.5 million deal for Delta Microwave comes after President Trump's budget blueprint for next
04/05/2017 04:11 AM
Finding Ways to Test Massive MIMO 5G
Measuring the massive MIMO antenna arrays to be used with 5G cellular base stations poses many challenges for test facilities.
04/03/2017 04:42 AM
Observing Climate Changes from Space
A long-running NASA satellite mission continues to gather atmospheric data as part of a study of Earth’s climate changes related to water.
04/01/2017 07:30 AM
Who Will Advance to the Championship?
Head on over to the bracket and help push your favorite 2 universities into the championship round. Vote Now and determine which will make the championship round
03/30/2017 09:56 PM
Forming Low-Impedance MEMS Bandpass Filters
Several resonator design architectures were developed to achieve the lower input and output port impedances needed for modern wireless communications applications.
03/30/2017 01:08 PM
One-on-One with Greg Henderson, Analog Devices
Technology Editor Chris De Martino talks with Analog Devices' Greg Henderson about the company's role in advancing semiconductor, sensor, and wireless technology, as well as packaging.